How to deal with stress-induced nausea?

Maria J asked:

Over the past few months, I have become unable to control the need to vomit in stressful situations. It started whenever I would have to see my ex-boyfriend, but now I throw up in every situation that’s even a little bit stressful/nerve-wracking (parties, my senior prom, having to give a presentation). i’ll become increasingly nervous until I have to vomit, but after i’ll feel totally calm and healthy.

I don’t want this to interfere with my life; I want to be able to go to a party or on a date without needing to throw up. What, besides “taking deep breaths” can I do to avoid this episodes? Any kind of homeopathic remedies? Any tips greatly appreciated.

Remedy for Poop Breath